1. Asteroids won't smash into Earth, will they?
2. There isn't life on Mars, is there?
3. We haven't got any black holes in our solar system, have we?
4. Jake has a 3D printer, doesn't he?
5. Our smartphones are in the car, aren't they?
6. Lisa will study Physics in university, won't she?
7. You don't have an extra phone charger, do you?
8. The astronaut hasn't gone on a space walk yet, has he?
9. Let's take some classes at the language school, shall we?
10. Tom was cycling when you saw him, wasn't he?